When compared to steak-cut chips (UK), fries (US & Global), roasted potatoes or crinkle-cut chips (UK), a wedge could be defined as having distinct corners when viewed as a cross-section perpendicular to the normal- a centreline running along the length of the cut potato form. This can be viewed as a triangular section, should there be 4 corners it would commonly be referred to as just a chip/fries.
In Germany, they are known as Kartoffelspalten ('potato-clefts'), wilde Kartoffeln ('wild potatoes'), or Westernkartoffeln ('Western potatoes').
In France, they are called potatoes (pronounced as it is in English).
In Sweden, they are called klyftpotatis ('wedge-potatoes').
In Russia, they are known as картофель по-деревенски ('village-style potato') or картофель по-домашнему ('homestyle potato').
In Turkey, they are known as elma dilim patates ('apple slice potatoes').
In Australia, potato wedges are a common bar food, that are almost always served with sour cream and sweet chilli sauce. They are usually seasoned with a variety of spices, commonly paprika, salt and pepper.
In Yorùbáland of Nigeria, they are known as Dùndún.
In Saudi Arabia, they are known as batates maqli ('fried potatoes') and are also known by their English name ('wedges').